Code Definition

C1177 — Park Brake Actuator Assembly Switch Released Circuit Failure

System: Chassis  |  Type: Manufacturer-Specific  |  Make: Generic

About C1177

C1177 is a manufacturer-specific chassis diagnostic trouble code. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C1177 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

Scanning & clearing: Chassis (C) codes are stored in the ABS, traction control, or stability-control modules. An enhanced or OEM-level scan tool is usually required to read and clear them.

C1177 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

On vehicles fitted with an electric park brake, the park brake actuator assembly contains an internal switch that reports the released position of the mechanism back to the control module, commonly the park brake control module, ABS/EBCM, or body control module. The module uses this released signal to confirm the actuator has fully retracted and to manage warning lamps and driveaway logic. DTC C1177 sets when the module detects a circuit failure on the released switch within the park brake actuator assembly, such as an open circuit, a short, or a signal that does not change state through the a...

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